Stainless Steel 409 Annealed vs 409 Temper Rolled
Stainless Steel · 409 temper comparison
409 Annealed and 409 Temper Rolled are two conditions of the same stainless steel grade, 409: Annealed versus Temper Rolled (temper rolled / skin passed). The chemistry is identical, so every difference below comes from the condition. 409 Temper Rolled is the stronger of the two: yield strength 330 MPa (47.9 ksi) against 250 MPa (36.3 ksi) for 409 Annealed, about 32% more; tensile strength follows at 490 MPa (71.1 ksi) vs 450 MPa (65.3 ksi). In exchange, 409 Annealed is the more ductile: elongation 30% versus 22% for 409 Temper Rolled, and 409 Temper Rolled is harder (170 HB vs 150 HB).
409 AnnealedChoose it when the part is bent, formed or impact-loaded.
409 Temper RolledChoose it when strength drives the design.
409 Annealed vs 409 Temper Rolled: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 7.7 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,482°C2,700 °F · Liquidus Temperature 1,532°C2,790 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 24.9 W/m·K14.4 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.7 µm/m·K6.5 µin/in·°F · Latent Heat of Fusion 260 J/g112 BTU/lb · Max Service Temperature (continuous) 675°C1,247 °F · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.9 % IACS · Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.35 V · Corrosion Resistance 40 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 60 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 40 MJ/kg17,197 BTU/lb · Embodied Carbon (primary production) 2.9 kg CO₂/kg · Embodied Water 90 L/kg10.8 gal/lb · Typical Recycled Content 65%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
409 Annealed vs 409 Temper Rolled — frequently asked
Is 409 Temper Rolled stronger than 409 Annealed?
Yes. 409 Temper Rolled has a typical yield strength of 330 MPa (47.9 ksi) against 250 MPa (36.3 ksi) for 409 Annealed — about 32% more. Tensile strength is 490 MPa (71.1 ksi) vs 450 MPa (65.3 ksi).
Which condition does FabDigit quote by default, Annealed or Temper Rolled?
Annealed is the default 409 condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose 409 Annealed over 409 Temper Rolled?
Pick 409 Annealed when the part is bent, formed or impact-loaded. Pick 409 Temper Rolled when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 409 Annealed and 409 Temper Rolled side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.